package com.ufgov.zc.server.system.util;import com.ufgov.zc.common.system.model.AsCompo;import com.ufgov.zc.server.system.SpringContext;import com.ufgov.zc.server.system.dao.IAsCompoDao;public class OrderColumnsUtil {  private IAsCompoDao asCompoDao = (IAsCompoDao) SpringContext.getBean("asCompoDao");  private static OrderColumnsUtil orderColumnsUtil = new OrderColumnsUtil();  private OrderColumnsUtil() {  }  public static synchronized OrderColumnsUtil getInstance() {    return orderColumnsUtil;  }  public String getOrderColumns(String compoId) {    String orderColumns = null;    AsCompo asCompo = asCompoDao.getAsCompo(compoId);    if (asCompo != null) {      orderColumns = asCompo.getOrderColumns();    }    return orderColumns;  }}